US3874153A - Method of and apparatus for producing partially bulked yarn - Google Patents

Method of and apparatus for producing partially bulked yarn Download PDF

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Publication number
US3874153A
US3874153A US427491A US42749173A US3874153A US 3874153 A US3874153 A US 3874153A US 427491 A US427491 A US 427491A US 42749173 A US42749173 A US 42749173A US 3874153 A US3874153 A US 3874153A
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United States
Prior art keywords
filaments
bulked
yarn
twist
tension
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Expired - Lifetime
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US427491A
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English (en)
Inventor
Kentaro Kawasaki
Keizo Takizawa
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Chori Co Ltd
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Chori Co Ltd
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/024—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting with provision for imparting irregular effects to the yarn

Definitions

  • the present invention relates to a method of and an apparatus for producing specific bulked yarn.
  • two (or more) pieces of filaments are first fed to the same twisting spindle of a false twister and then passed, while in a doubled state, through a series of steps comprising twisting, heat setting and untwisting.
  • the feed section and the suitable means for intermittently changing the tension between the two filaments so as to provide the respective filaments with different feed conditions. If the two filaments, differing in tension from each other, are supplied to the twisting spindle, the filament with the smaller tension is given sufficient twist while the filament with greater tension is afforded insufficient twist.
  • the former receives sufficient crimping in the succeeding crimping step and is bulked, while the latter is provided insufficient crimping and little or no bulk.
  • these operations are performed intermittently, there is formed a partially bulked yarn, or a yarn with its bulkiness varied regularly along its length, such as shown in FIG. 1.
  • Such partially crimped yarn is generally lower in retractability and torque than the usual crimped yarn which has been prepared from an ordinary twisting heat setting untwisting process and which is uniformly crimped along its entire length.
  • the present invention removes such defects of the partially crimped yarn.
  • the present invention envisages an improved bulked yarn having alternate bulked portions and non-bulked portions, with the difference between the bulked and non-bulked portions being made more conspicuous. so that this yarn can be used in a fabric, with resultant excellent creping effect.
  • the present invention proposes a method of obtaining an improved partially bulked yarn from a twisting heat setting untwisting process by imparting uniform tension and non-uniform tension to more than two pieces of filaments and further adding an extra twisting step, thereby making more conspicuous the difference between the bulked and the nonbulked portions.
  • the extra twisting step may be incorporated before the partial bulking work (that is, it may be incorporated as a pro-twisting step), or after the partial bulking has been completed (that is, it may be adapted as an after-twisting" step).
  • the present invention also features means for changing the tension of the filaments, said means comprising a roller provided around its periphery with a yarn guiding groove and designed to be capable of optionally controlling the working period, whereby it is possible to form the desired bulked and non-bulked portions at high speed.
  • FIG. 1 is a perspective view of a filament having the bulked and non-bulked portions
  • FIG. 2 is a diagram showing the change of twist and the bulked portions of a partially bulked yarn
  • FIG. 3 is a schematic drawing of an apparatus of the present invention.
  • FIGS. 4, 5 and 6 are schematic drawings showing the change of filament tension
  • FIG. 7 is a perspective view of a grooved roller with a filament fitted in a groove 17 therein;
  • FIG. 8 is a developed view of the grooved roller.
  • the grey yarn which is to be twisted in the twisting step of the present invention is a gyratory (or torqueimparted) crimped yarn obtained from a common twisting heat setting untwisting process. Every bulked portion is well crimped and each filament therein presents a finely crimped configuration, providing a well crimped yarn portion, while every nonbulked portion is insufficiently crimped and each filament therein is much the same as a non-processed filament, providing a roughly crimped yarn portion.
  • FIG. 2 is a model drawing showing the change in the lengths of a bulked portion 1 and of a non-bulked por tion 2 according to the number of twists given.
  • references numeral 3 represents the case where the number of twist is zero, and 4 and 5 represent, respeetively, the cases where the number of twists has been gradually increased. It will be seen that as the number of twists increases, the length of the nonbulked portion 2 where the twist: is concentrated in proportionally increased as indicate-d by 2' and 2", and the apparent number of twists in the non-bulked portion also increases.
  • the apparent diameter ratio signifying the difference in bulkiness between the bulked and nonbulked portions is naturally changed, that is, increased proportionally to the number of twist given.
  • Table 1 below shows the results of actual measurements conducted on denier-36 polyester filaments and 40 denier-l7 nylon filaments obtained according to the present invention. The number of twist given is expressed by twist/meter.
  • plural pieces of grey yarn 6, 6 are first bundled up by a fixed guide 7, then passed through feed rollers 8, grooved roller 9, fixed guides 10, 10, heater 11, false twisting spindle l2 and delivery roller 13, and then wound up on the respective take-up mechanisms 14, 14'.
  • the grey yarns 6, 6' are moved reciprocatingly while engaged in the groove in said grooved roller 9 and are then separated into the individual yarns 6, 6' and further guided by the respective fixed guides 10, 10', so that tension of the yarns 6, 6' is changed periodically with the rotation of the grooved roller 9.
  • the groove formed in the grooved roller 9 for guiding the yarns while engaging them therein is formed in a zigzag in the surface, as shown in FIGS. 7 and 8, so as to let the yarns therein traverse in accordance with rotation of the roller.
  • the two yarns guided into the groove are caught in a parallelled state at a point 15 and more successively from the position of FIG. 4 to the position of FIG. 5 and then to the position of FIG. 6 with every rotation of the roller in the same direction as the direction of advancement of the yarns.
  • Numeral 16 indicates a doubling point for the yarns.
  • both yarns 6, 6 are under the same tension and undergo normal false twisting in a parallelled state, but in the situations of FIGS. 5 and 6, since the point 15 moves to the right or to the left in accordance with rotation of the roller 9, there is created a difference in tension between the two yarns 6, 6.
  • the tension of the yarn 6 becomes greater than that of the yarn 6, so that when twisting occurs by the false twisting spindle under this condition, the yarn 6 with the smaller tension is given sufficient twist while the yarn 6 with the greater tension resists twisting, and as a result, though the yarn 6 is afforded sufficient crimping, the yarn 6 is not given sufficient crimping. Then, when the situation is changed into that of FIG.
  • twist is accumulated predominantly in the easily twistable non-bulked portions of the yarn having the bulked and non-bulked portions arranged alternately along its length, so that the difference between both portions is very conspicuous and the latent torque in the filaments is increased. Therefore, when a texture is made by using such yarn, there is obtained a crimped fabric having a prominent creping effect and good feeling.
  • a method of producing a partially bulked yarn comprising the steps of alternately giving uniform tension and non-uniform tension to more than two pieces of thermoplastic synthetic filaments, performing periodic changes of tension between said filaments. bundling said filaments, passing the bundled filaments through a heater and a false twisting spindle to form a partially bulked yarn having alternately arranged bulked and non-bulked portions, and then giving additional twist to said yarn at 50 to 500 twist/meter.
  • a method of producing a partially bulked yarn comprising the steps of giving twist to thermoplastic filaments at 50 to 500 twist/meter, alternately giving uniform tension and non-uniform tension to more than two pieces of the twisted thermoplastic synthetic filaments, performing periodic changes in tension between rollers, a filament guide roller having formed therearound a filament guide groove, fixed guides adapted to hold corresponding filaments emerging from said groove, a fixed guide for bundling said filaments, a

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US427491A 1972-12-28 1973-12-26 Method of and apparatus for producing partially bulked yarn Expired - Lifetime US3874153A (en)

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JP732550A JPS5236176B2 (xx) 1972-12-28 1972-12-28

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US3874153A true US3874153A (en) 1975-04-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626115A1 (de) * 1975-06-11 1976-12-30 Toray Industries Texturierte polyester-garne und verfahren zu deren herstellung
US4998942A (en) * 1989-12-27 1991-03-12 Milliken Research Corporation Snubber profile
CN100339524C (zh) * 2000-09-14 2007-09-26 杜邦-东丽株式会社 耐热卷曲变形纱的制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111671U (ja) * 1983-12-28 1985-07-29 奥園　明晴 点灯式電気うき

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113413A (en) * 1959-06-08 1963-12-10 Eastman Kodak Co Apparatus and method for producing volumized slub yarn
US3394538A (en) * 1966-01-14 1968-07-30 Celanese Corp Spun yarn
US3412543A (en) * 1965-02-17 1968-11-26 Heberlein Patent Corp Method and apparatus for manufacture of slub-containing textured yarns
US3448570A (en) * 1968-01-02 1969-06-10 Phillips Petroleum Co Method and apparatus for taking-up yarn
US3496714A (en) * 1967-01-03 1970-02-24 Owens Corning Fiberglass Corp Bulky yarn
US3685268A (en) * 1970-05-08 1972-08-22 Chavanoz Moulinage Retorderie Method and apparatus for use in the production of fancy yarns
US3763640A (en) * 1969-02-19 1973-10-09 Akzona Inc Production of a composite thread
US3768245A (en) * 1969-11-21 1973-10-30 Courtaulds Ltd Crimping slub filaments of thermoplastic polymers
US3775955A (en) * 1971-07-30 1973-12-04 Bigelow Sanford Inc Composite false-twist yarns, methods and apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113413A (en) * 1959-06-08 1963-12-10 Eastman Kodak Co Apparatus and method for producing volumized slub yarn
US3412543A (en) * 1965-02-17 1968-11-26 Heberlein Patent Corp Method and apparatus for manufacture of slub-containing textured yarns
US3394538A (en) * 1966-01-14 1968-07-30 Celanese Corp Spun yarn
US3496714A (en) * 1967-01-03 1970-02-24 Owens Corning Fiberglass Corp Bulky yarn
US3448570A (en) * 1968-01-02 1969-06-10 Phillips Petroleum Co Method and apparatus for taking-up yarn
US3763640A (en) * 1969-02-19 1973-10-09 Akzona Inc Production of a composite thread
US3768245A (en) * 1969-11-21 1973-10-30 Courtaulds Ltd Crimping slub filaments of thermoplastic polymers
US3685268A (en) * 1970-05-08 1972-08-22 Chavanoz Moulinage Retorderie Method and apparatus for use in the production of fancy yarns
US3775955A (en) * 1971-07-30 1973-12-04 Bigelow Sanford Inc Composite false-twist yarns, methods and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626115A1 (de) * 1975-06-11 1976-12-30 Toray Industries Texturierte polyester-garne und verfahren zu deren herstellung
US4998942A (en) * 1989-12-27 1991-03-12 Milliken Research Corporation Snubber profile
CN100339524C (zh) * 2000-09-14 2007-09-26 杜邦-东丽株式会社 耐热卷曲变形纱的制造方法

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Publication number Publication date
JPS5236176B2 (xx) 1977-09-13
JPS4987843A (xx) 1974-08-22

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